Discussion :: Earth
- ________ is a natural electrical phenomenon characterized by the appearance of streams of reddish or greenish light in the sky, especially near the northern or southern magnetic pole
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Answer : Option D
Explanation :
Aurora is a natural electrical phenomenon characterized by the appearance of streams of reddish or greenish light in the sky, especially near the northern or southern magnetic pole. Aurora is a light display phenomenon which often takes place in the polar regions. In this phenomenon electrons collide with upper atmosphere of Earth and when they cool down they release energy in the form of light.
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